Which of the following is NOT considered a common sign of bed bug presence?

Furniture damage is not considered a common sign of bed bug presence because bed bugs are primarily blood-feeding insects that do not cause structural harm or damage to furniture itself. Instead, their presence is typically indicated by other signs that are more directly related to their biology and behavior.

Fecal spots are telltale signs, as bed bugs excrete digested blood, leaving behind dark droppings on surfaces. Molted skins from nymphs signal the growth stages of bed bugs, with the shed exoskeletons serving as evidence of their presence and development. Sudden allergic reactions or skin reactions in humans can also be indicative of bed bug bites, as some individuals may show sensitivity to the proteins in the bed bug saliva.

Therefore, while fecal spots, molted skins, and allergic reactions are all associated with bed bug infestations, furniture damage does not directly correlate to bed bug activity, which is why it is not considered a common sign of their presence.